Grounding Help

[wirelessdog]

I apologize in advance because I am posting my woes in several different venues and I know some of us are members of them.

I have a new tower build on a tower primarily used by a FM radio station. Their ERP is 7kw and they operate at 103.1FM

I am having Ethernet issues. I can't keep anything linked at anything other than 10mbps. Locking to gig makes the ports flap.

Historically I use shielded cable top to bottom with shielded ends at the top and bottom straight into UBNT PoE injectors.

In this particular case it is not working. I've tried just grounding the top, just grounding the bottom, grounding the top and bottom with no success. I've placed Ferrites at the top and bottom on the Cat5, I've made sure the Cat5 has separation from the FM feedline.

Is there something different I need to do? It has been suggested I run DC power to the top and use a Netonix DC-250 switch and keep my cat5 runs down to nothing and use unshielded ends between the Netonix and the sectors/dishes. How then are the radios ESD protected? This isn't a true floating ground because the antennas are DC grounded, no?

Any thoughts at this point are welcome. I've wasted two days at this site and counting...

[sirhc]

We have determined and has been discussed here that our DC switches do NOT work on FM Broadcast tower sites.

You should read this post: viewtopic.php?f=17&t=1342&hilit=tm+tower

Now we are nearing a redesign of the WS-12-250-DC and WS-12-DC that should work on FM Tower sites but they will not be available until early summer.

I have 2 prototypes to send out to test sites we were working with, one in CA with wifi442 and a volcano in Panama